A particle having charge 10*10-6C and mass 1*10-6 moves in a horizontal circle of radius 10 cm under the influence of a magnetic field of 0.1 T. When the particle is at a point P, a uniform electric field is switched on so that the particle starts moving along the tangent with uniform velocity. The electric field is - 1. 0.1V/M 2. 1.0V/M 3. 10.0 V/M 4. 100 V/M
